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Trade and Other Receivables (Tables) | 12 Months Ended
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Dec. 31, 2020
Subclassifications of assets, liabilities and equities [abstract] |
Trade and Other Receivables |
As at Dec. 31 | 2020 | 2019
Trade accounts receivable | 488 |  | 399 |
Collateral paid (Note 16) | 49 |  | 42 |
Current portion of finance lease receivables (Note 8) | 36 |  | 15 |
Income taxes receivable | 10 |  | 6 |
Trade and other receivables | 583 |  | 462 |

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